Hi I'm busy creating an Asset library, where I've bundled a lot of cc0 assets & Audio into 1 project, I've set up collisions & animations & some basic behaviors etc. would it be legal to sell this asset bundle on the asset store?
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wiki.creativecommons.org/wiki/CC0_FAQ
In general, yes, if all of the work included in your bundle was indeed published as CC0 by the original creator.
There are exceptions - CC0 surrenders legal ties between creator and work to the "greatest extent legally permissible". Read the FAQ for more information.